I’ve been running various editions of 4.5 since sometime last summer, with .135 on my Sprint 8830 WE at the moment, and I’ve had memory leak issues for probably the last 6 months. My phone hits 0 bytes every 1-2 days unless I do a battery pull or Alt-Shift-Del, at which point I get 4-5MB back. I’m running Gmail, Sprint TV, Viigo, BlackBerry App World, MidpSSH, FaceBook, Google Maps, Sprint Navigation, Shazam, iHeartRadio, Google TalkBlockBerry, Mobile Checkbookand I Love BlackBerry. Before this update, I had 5090633 bytes free (I did a battery pull right before getting that number), and after the update, I see 5806376 bytes free. Hopefully this will stay above 0…when it gets low, it slows to a crawl and deletes all my messages, and I want to throw it out a window.

On a positive note, the return of the in-call timer is much appreciated 🙂 And the Alt-Shift-Del trick reboots a lot faster, but it brings me back to the same screen I was already on, so I’m not sure if it’s the equivalent to a battery pull.